Since 2013 – From Collectors for Collectors
| Chemische Formel | Na3(Fe2+)4Fe3+[(OH)2|Si8O22][ | |
| Familie | Amphibole | |
| Farbe | schwarz, grün | |
| Härte | 5,5-6 | |
| Kristallsystem | monoklin | |
| Glanz | Glasglanz | |
| Form | tafelig, prismatisch, faserig | |
| Typlokalität | Grönland | |
| Weitere Fundorte | Malawi, Kanada, Dänemark, Marokko, New Hampshire | |
| Bildung | Magmatisch, Metamorphose | |
| Paragenesen | Feldspat, Aegirin, Zirkon | |
| Pseudomorphose | ||
| Toxizität |  ungiftig | |
| Strichfarbe | weiß | |
| Mineralklasse | Silikate | |
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| Chemische Formel | LiNaZrSi6O15 | |
| Familie | ||
| Farbe | farblos, weiß, rosa | |
| Härte | 6 | |
| Kristallsystem | orthorhombisch | |
| Glanz | Glasglanz | |
| Form | pseudohexagonal, prismatisch, tafelig | |
| Typlokalität | Washington | |
| Weitere Fundorte | Washington | |
| Bildung | Magmatisch (Pegmatite) | |
| Paragenesen | Arfvedsonit, Feldspat, Astrophyllit, Glimmer | |
| Pseudomorphose | ||
| Toxizität | ungiftig | |
| Strichfarbe | weiß | |
| Mineralklasse | Silikate | |
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